Smudged Or Marred Printout (Reverse Side); White Or Black Banding In The Carriage Running Direction - Epson Stylus Pro 7600 Service Manual

EPSON Stylus Pro 7600/9600

3.3.4 Smudged or Marred Printout (Reverse side)

If smudging or marring of the paper back surface with ink occurs, the following items
should be checked.
1. Check to see if there isn't ink adhering to the paper feed path. If there is ink
adhering, it should be wiped off.
Sub-platen A/B Surface
Grid roller surface
Paper guide L surface
Paper guide L2 surface
2. One likely cause of ink adhering to the above parts is the following cause.
Paper feeding at a slant during printing (at the point when 1 page is finished)
The ink absorbing sponge for "borderless printing" is deformed or swelling.
If the Paper Skew Detection setting is off in "Printer Settings" →
C A U T I O N
"Panel Setting Menu" → "Paper Width Detection," if the user's
paper size setting is not correct, the surface of the platen will be
printed.
Troubleshooting
3.3.5 White or Black Banding in the carriage running
direction
If white or black banding (uneven density) in parallel with the carriage running
direction appears on your printout, check the following points:
1. Nozzle Check Pattern Printing (p.45)
Select "Adj: Check Nozzle" in the
function.
Check the following points:
Dot missing
Head ID setting value
If dot missing is found, execute head cleaning. (If deemed necessary, select and
execute
self-diagnostic function.)If the Head ID value is wrong, set the correct value.
2. Adjustment
If dot missing is not found, perform the following adjustments and check for
improvement:
Paper feed correction (driver)
Head Slant Adjustment (Mechanical Adjustment) (p.247)
If each line of nozzles in the head is perpendicular to the carriage running
direction correctly, the raster lines printed with nozzles can overlap or be
dislocated, so that black banding (uneven density) or white banding (blank
spaces between raster lines) may occur.
If the adjustments above do not work enough to improve the quality, try to improve by
executing
function.
Troubleshooting Based on Your Printout
Adjustment (p.230)
"Power cleaning (p.60)" in the SelecType mode or
Feed Correction + T&B Adjustment (p.239)
Revision A
menu by the self-diagnostic
"Cleaning (p.259)" by
by the self-diagnostic
149